When viewed from the rest of the galaxy, the edge of our solar system appears slightly dented as if a giant hand is pushing one edge of it inward, far-traveling NASA probes reveal. Information from Earth’s first space probes to hit the thick edge of the solar system — called the “heliosheath” where the solar wind slows abruptly — paint a picture that is not the simple circle that astronomers long thought, according to several studies published Thursday in the journal Nature.
